Hi Geoff,
I have been having pretty much had the same issues as you. My mount is an AZ-EQ6 with EQMOD and guide camera is an ASI120 MM-S.
I had to do a few things to get everything stable:
1. Make sure you have the latest drivers from ZWO, they recently released a new version.
2. I find the ZWO drivers are quite unstable, both native and ASCOM, so I make sure I only run everything after a clean boot and only run the software I absolutely need to for imaging.
3. I confirm I can connect to my guide camera and that it is working as expected each session. I usually do this in PHD2 once I have connected to the camera and then hit the loop button, I also fine tune my exposure settings at this point.
4. When start EQMOD I make sure off PPEC is off.
5. In PHD3 I always make sure the exposure is 2 seconds or above.
Hope this is helpful.
Forgot to mention, I am using pulse guiding.
Last edited by simon_rl; 13-10-2017 at 10:41 AM.
Reason: Added comment.
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